CN205779681U - There is shimming assembly and the crescent gear pump of pressure guide hole - Google Patents
There is shimming assembly and the crescent gear pump of pressure guide hole Download PDFInfo
- Publication number
- CN205779681U CN205779681U CN201620423186.6U CN201620423186U CN205779681U CN 205779681 U CN205779681 U CN 205779681U CN 201620423186 U CN201620423186 U CN 201620423186U CN 205779681 U CN205779681 U CN 205779681U
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- CN
- China
- Prior art keywords
- spring groove
- placing trough
- pilot
- hole
- guide hole
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
This utility model discloses a kind of shimming assembly with pressure guide hole, is made up of positive and the bluff bit matched with described positive, arranges with having in the placing trough installing bluff bit, be provided with pilot through hole on described placing trough on described positive；Arranging pilot port on described placing trough, described pilot through hole is positioned close on the placing trough of pilot port.This utility model has the following advantages: be provided for pilot through hole, can effectively open bluff bit, coordinate corresponding spring, makes bluff bit open under the effect of oil pressure for also having reliable elasticity and opens, and pressurize effect is more preferable, and reliability is improved.
Description
[technical field]
This utility model relates to crescent gear pump field, especially one and improves pressure maintaining performance and stablize
The shimming assembly with pressure guide hole of property and crescent gear pump.
[background technology]
Crescent gear pump has without pocketed oil phenomenon, conveying is steady, efficiency is high, noise is little and uses
The advantages such as life-span length.It is widely used in transfer oil, chemical industry, coating, dyestuff, food, oils and fats, doctor
Newtonian liquid in the industries such as medicine or non-newtonian liquid；But conveying the kind lightweight of liquid, volatility
Liquid is until the big medium of the viscosity such as heavy, thickness, even semisolid liquid, its viscosity being suitable for
Scope can reach 0.2-1000000cp.
High and low pressure chamber is separated by the movable swing link (shimming assembly) of existing crescent gear pump, and
It is being formed radially pressure compensation so that formed several gapless close between interior external tooth tooth top and swing link
Envelope, the most dynamic compensation dish then ensures the excellent sealing of axial gap so that the internal leakage of this pump reduces to
Low.Although the crescent gear pump of this structure has excellent sealing effect, but internal leakage can not
Avoid.
Existing improved structure, although there is good sealing effect, but the bluff bit of movable swing link is because of time long
Between inoperative time can by oil and negative pressure seal, it is impossible to pressurize of effectively upspringing；It addition, floating also can be there is
The problem of resonance, stability is poor.Therefore, it is necessary to existing crescent gear pump is improved.
[utility model content]
The purpose of this utility model is the deficiency overcoming above-described prior art to exist, it is provided that one
When kind running can with pilot, improve the reliable and shimming assembly with pressure guide hole of stability.
Another object of the present utility model is to provide a kind of raising reliably and the inside engaged gear of stability
Pump.
For reaching above-mentioned purpose, the technical solution of the utility model is: have the shimming assembly of pressure guide hole,
It is made up of positive and the bluff bit matched with described positive, described positive is arranged with having in installing pair
The placing trough of sheet, is provided with pilot through hole on described placing trough.
Arranging pilot port on described placing trough, described pilot through hole is positioned close to the placing trough of pilot port
On.
Arranging spring groove in described placing trough, described pilot through hole is arranged in spring groove or is arranged on
High spot between adjacent springs groove, can effectively improve pilot effect.
It is provided with stopper slot, when bluff bit is arranged in placing trough, at described spring in described spring groove
Arranging shell fragment in groove, described shell fragment is placed in described stopper slot, and described pilot through hole is arranged on stopper slot
In.Positive is made mutually to open with bluff bit by shell fragment elastic force and pilot through hole, to play positive confinement guarantor
Press effect, and shell fragment will not produce the defects such as slip.
First spring groove, the second spring groove or the 3rd spring groove can be set in described placing trough, described
First spring groove, the second spring groove and the 3rd spring groove set gradually respectively on placing trough upper surface,
Wherein the second spring groove is positioned at middle part, and described first spring groove and the 3rd spring groove are positioned at described second bullet
The both sides of spring groove, described pilot through hole is positioned close on the 3rd spring groove of pilot port or the second bullet
In projection between spring groove and the 3rd spring groove.
Described second spring is than the first spring groove of both sides and the 3rd spring groove depth；Install pole and
Shell fragment, described shell fragment is installed on bottom the second spring groove, and described pole is installed on above shell fragment, described
Pole surface can contact with calking bluff bit lower surface.
A kind of crescent gear pump, including a gear ring for internal messing, one with described gear ring
The little gear of part teeth portion engagement, a gear ring installing described internal messing and the pump housing of little gear, institute
State one annular space become narrow gradually of formation, described annular between the outside circle portion of gear ring and little gear
There is described in setting in space the shimming assembly of pressure guide hole.
Compared with prior art, this utility model has the following advantages: be provided for pilot through hole, permissible
Effectively open bluff bit, coordinate corresponding spring, make bluff bit open for also having under the effect of oil pressure
Elasticity is opened reliably, and pressurize effect is more preferable, and reliability is improved.
[accompanying drawing explanation]
With embodiment, this utility model is further illustrated below in conjunction with the accompanying drawings:
Fig. 1 is this utility model crescent gear pump cross section view；
Fig. 2 is the longitudinal sectional view that this utility model has the shimming assembly of pressure guide hole；
Fig. 3-9 is positive embodiment three-dimensional structure diagram.
[detailed description of the invention]
Below in conjunction with the drawings and specific embodiments, this utility model is described in detail.
A kind of modified model shimming assembly has the shimming assembly of pressure guide hole, as shown in figs. 2-9, by positive
61 and the bluff bit 62 that matches with described positive 61 form, described positive 61 is provided with for
The placing trough of bluff bit 62 is installed, described placing trough is provided with minimum of one or some pilots are led to
Hole 63.Spring groove (64,65,66) is set in described placing trough；In described spring groove (64,65,66)
It is provided with stopper slot.Described spring groove can arrange minimum of one, two or three etc. as required.
Preferably, minimum in described placing trough three spring groove the first spring groove the 64, second bullets are set
Spring groove 65 and the 3rd spring groove 66.When bluff bit 62 is arranged in placing trough, at described spring groove
In (first spring groove the 64, second spring groove 65 and the 3rd spring groove 66), shell fragment is set；Pass through
Shell fragment elastic force makes positive 61 mutually open with bluff bit 62, to play the pressurize effect of positive confinement.Institute
Stating and arrange pilot port on placing trough, described pilot through hole 63 is positioned close on the placing trough of pilot port.
At the projection 67 that described pilot through hole is arranged in spring groove or is arranged between adjacent springs groove,
Can effectively improve pilot effect.Described shell fragment can be wavy spring.Described first spring groove
64, the second spring groove 65 and the 3rd spring groove 66 lay respectively at and set gradually on placing trough upper surface,
Wherein the second spring groove 65 is positioned at middle part, and described first spring groove 64 and the 3rd spring groove 66 are positioned at
The both sides of described second spring groove 65.Wherein, second spring groove 65 at middle part is than the first bullet of both sides
Spring groove 64 and the 3rd deep 0.1-0.5mm of spring groove 65；Wherein, pole and shell fragment, described bullet are installed
Sheet is installed on bottom the second spring groove 65, and described pole is installed on above shell fragment, described pole surface
Can contact with bluff bit 62 lower surface.After described positive 61 assembles with bluff bit 62, a side leans against top
Put on block 3.
A kind of crescent gear pump, as it is shown in figure 1, include a gear ring 5 for internal messing, one
The little gear 9 that individual and described gear ring 5 part teeth portion engages, gear ring 5 He installing internal messing
The pump housing 4 of little gear 9.Described little gear is fixed on tooth axle, is bearing in the described pump housing by tooth axle
In 4.Described little gear 9 is arranged off-centre relative to gear ring 5, little gear 9 and the phase in gear ring 5
Teeth portion is engaged.Between described gear ring 5 and the outside circle portion of little gear 9 formed one sickle-shaped by
The annular space that gradual change is narrow--pump chamber, is provided with substantially all with the side of described pump chamber in described pump chamber
What edge profile was suitable has the shimming assembly 6 of pressure guide hole.The described shimming assembly 6 with pressure guide hole
Effect be to contact the teeth groove being entirely covered is carried out by forming face with tooth top in outside circle region
Seal, these teeth groove in axial both sides respectively by the end face of the pump housing 4 and the pressure plare that is arranged on pump case
Seal with the sealing ring of two respective shapes.Crescent gear pump also includes being arranged on the pump housing 4 front end
Front pump cover and protecgulum, be provided with oil sealing, axle bush between described protecgulum and front pump cover.The described pump housing and front pump
The sealing ring being provided with pressure plare and two respective shapes between lid seals.Behind the described pump housing 4 rear end
Pump cover and bonnet.The pressure plare that is provided with between the described pump housing 4 and rear pump cover seals and two respective shapes
Sealing ring seal.The described pump housing is fixed by screw with protecgulum, front pump cover, rear pump cover and bonnet.
The described pump housing 4 arranges high-pressure oil outlet 8, described high-pressure oil outlet 8 and the high pressure in the pump housing 4
Oil pocket 7 connects；The described pump housing 4 arranges low pressure oil-in 1, described low pressure oil-in 1 and pump
Low pressure oil pocket 2 in body 4 connects.
Although this utility model is to be described with reference to specific embodiments, but this description be not meant to right
This utility model is construed as limiting.With reference to description of the present utility model, other of the disclosed embodiments become
Change, for those skilled in the art be all it is anticipated that, this change should belong to affiliated right want
In seeking limited range.
Claims (7)
1. there is the shimming assembly of pressure guide hole, be made up of positive and the bluff bit matched with described positive,
It is characterized in that, described positive is arranged with having in the placing trough installing bluff bit, on described placing trough
It is provided with pilot through hole.
2. according to the shimming assembly with pressure guide hole described in claim 1, it is characterised in that described
Arranging pilot port on placing trough, described pilot through hole is positioned close on the placing trough of pilot port.
3. according to the shimming assembly with pressure guide hole described in claim 1, it is characterised in that described
Arranging spring groove in placing trough, described pilot through hole is arranged in spring groove or is arranged on adjacent springs groove
Between high spot.
4. according to the shimming assembly with pressure guide hole described in claim 3, it is characterised in that described
It is provided with stopper slot in spring groove, when bluff bit is arranged in placing trough, bullet is set in described spring groove
Sheet, described shell fragment is placed in described stopper slot, and described pilot through hole is arranged in stopper slot.
5. according to the shimming assembly with pressure guide hole described in claim 4, it is characterised in that described
First spring groove, the second spring groove or the 3rd spring groove be set in placing trough, described first spring groove,
Two spring grooves and the 3rd spring groove set gradually respectively on placing trough upper surface, wherein the second spring groove position
In middle part, described first spring groove and the 3rd spring groove are positioned at the both sides of described second spring groove, described in lead
Pressure through hole is positioned close on the 3rd spring groove of pilot port or between the second spring groove and the 3rd spring groove
Projection on.
6. according to the shimming assembly with pressure guide hole described in claim 5, it is characterised in that described
Second spring is than the first spring groove of both sides and the 3rd spring groove depth；Pole and shell fragment, described shell fragment are installed
Being installed on bottom the second spring groove, described pole is installed on above shell fragment, and described pole surface is secondary with calking
Sheet lower surface contacts.
7. a crescent gear pump, including a gear ring for internal messing, one and described gear ring
The little gear of part teeth portion engagement, one the gear ring of described internal messing and the pump housing of little gear, institute are installed
Stating one annular space become narrow gradually of formation between the outside circle portion of gear ring and little gear, described annular is empty
In be provided with according to the arbitrary described shimming assembly with pressure guide hole of claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620423186.6U CN205779681U (en) | 2016-05-10 | 2016-05-10 | There is shimming assembly and the crescent gear pump of pressure guide hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620423186.6U CN205779681U (en) | 2016-05-10 | 2016-05-10 | There is shimming assembly and the crescent gear pump of pressure guide hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205779681U true CN205779681U (en) | 2016-12-07 |
Family
ID=57409037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620423186.6U Active CN205779681U (en) | 2016-05-10 | 2016-05-10 | There is shimming assembly and the crescent gear pump of pressure guide hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205779681U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165820A (en) * | 2017-06-16 | 2017-09-15 | 海特克液压有限公司 | A kind of crescent gear pump |
-
2016
- 2016-05-10 CN CN201620423186.6U patent/CN205779681U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165820A (en) * | 2017-06-16 | 2017-09-15 | 海特克液压有限公司 | A kind of crescent gear pump |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |